Altitude Considerations - Majestic 380IDVNVC Installation And Operating Instructions Manual

380IDV/490IDV Fireplace Insert

AltItuDe CONSIDeRAtIONS

This heater has been tested at altitudes ranging from sea level to 4,500 feet (1,370 m). In this
testing, heater with standard orifice burns correctly with just an air shutter adjustment. If you
need to resize orifice for use at high altitude, contact your dealer.
Failure to adjust air shutter properly may lead to improper com-
bustion which can create a safety hazard. Consult your dealer or
installer if you suspect an improperly adjusted air shutter.
Exhaust
(Centered on unit)
Figure 8 -
Connecting Vent Pipe to Heater
12
Inlet
FP2626
380 Series - 3" and 3"
UL 1777 Gas Liner
490 Series - 4" and 3"
UL 1777 Gas LIner
Apply high-temperature silicone to
lines on both ends and secure with
two (2) screws
FP2626
connect exhaust pipe
VeNtING INStAllAtION
Termination Kit
380 Series - AI3TK33A
490 Series - AI42TK43A
57D0215